What's currently being constructed is 600 metres long. Essentially it's just a run down Cherry Street, to a loop north of the Lakeshore West tracks. It will be used for some 504 services from Dundas West - probably every second car I'd guess.
Not sure how long ... it's part of a reconstruction of the entire road, and service isn't due until after the Pan Am games (because it is adjacent to the Pan Am village, and won't have much of a purpose until these become condos after the games). However the road is being rebuilt now, so now is when the track is being put in.
In unfunded later phases, it would be extended to Queens Quay East, which would allow service to Union Station, or even to Exhibition Place. During the Portland redevelopment, over the next few decades, there are plans to extend it down Cherry to Commissioners Street and even Unwin Avenue, where service could go to Leslie.
Add to your comment.
The 2nd phase if it stay the course, will see the line go south to a loop at shipping channel on a new Cherry St that will connect to the unfunded QQ E line.
If the plans don't change, Commissioners St will disappears between the Don Parkway and Cherry St with a new LRT line and road been used north of it to get to a loop east of the Don Parkway on Commissioners St before going over to Leslie at a later date.
Some 20+ years, the Cherry St line will go south to Unwin and then over to Leslie.
There is still the vision to run the Boardview line south of Queen St to Commissioners St.
Most of the Leslie line will be in place with the maintenance yard being built where it is now.
With the track work being done now, the poles will be install for the overhead, since they will be used as light post. As for the overhead, that is hard to say, but I expect it will be install now to give TTC the ability to short turn cars if they have too. It would do away with the current short turning at Parliament for the 504. It would allow the 501 to be short turn also in both direction.
As for service, there was a plan to run very limit service (10-20 minutes) from the west until the area was more develop to support every 2nd or 3rd 504 Car either as an Dundas West-Mills Loop line or Dundas West-Mills Loop-Boardview. No service during the Pan AM games. All the new service would be assign a different route number. 519 and 521 numbers come to mind and not sure if the numbers for the various new routes were in any of minutes of the various non public meetings.
The big picture was to see cars leaving the Boardview Station and running to the Shipping Channel as well Union station and the Ex. There was also the loop to the Ex that bypass Union 100%.
Anything going south of the new loop depends on what is going to happen with the current underpass bridge. Even if the plan QQ E line was in place by 2013, the current bridge is the bottle neck now and then with no service connection.